230 - Antique ring in 18K yellow gold (750°/00) and platinum, featuring a center stone of an unheated, oval-faceted Ceylon sapphire weighing approximately 3 ct, set in a claw setting and surrounded by rose-cut diamonds. Dated to the early 20th century. Band width: 15.60 mm. Bellerophon certificate for the sapphire. Owl and mascaron hallmarks. Ring size: 51.5. Gross weight: 4.28 g.